Here's a timeline of Trump and his team's efforts to curtail the Russia investigation

U.S. President Donald Trump (L) speaks in Ypilanti Township, Michigan March 15, 2017 and FBI Director James Comey testifies before a Senate Judiciary Committee hearing in Washington, D.C., May 3, 2017 in a combination of file photos.
REUTERS/Jonathan Ernst/Kevin Lamarque/File Photos

Over the past year, indications that President Donald Trump may have obstructed or attempted to obstruct justice in the Russia investigation have steadily grown.

The recent news that Trump attempted to fire special counsel Robert Mueller sometime in June is but the latest in a steady stream of revelations since January of last year that suggest that the president sought to control — and often curtail — the scope and direction of the investigation.

The next few weeks may prove to be vital to Mueller's probe — the special counsel is looking to interview both Trump and his former chief strategist Steve Bannon about the details of former FBI director James Comey's firing in May and former White House chief strategist Michael Flynn's contacts within the administration.

Here's a timeline of actions Trump has taken so far, and their surrounding events, that his critics use to make the case he obstructed justice, along with incriminating events committed by those he reportedly sought to protect:

January 24, 2017: Flynn lied to the FBI when they interviewed him.

White House National Security Advisor Michael Flynn walks along the West Wing colonnade at the White House in Washington
Thomson Reuters

Flynn sat down with FBI investigators without a lawyer, and didn't inform anyone in the White House about the interview. The White House only found out about the meeting when former acting attorney general Sally Yates informed officials two days later.

February 13, 2017: After being asked to resign as national security adviser, Flynn steps down.

Michael Flynn.
Mario Tama/Getty Images

His resignation came after reports that some officials in the White House were worried Flynn might be blackmailed by the Russians. Renewed focus on his contacts with Kislayk hastened his departure as well.

Sometime before March 2, 2017: Trump pressured Attorney General Jeff Sessions not to recuse himself from the Russia investigation.

President Donald Trump speaks with Attorney General Jeff Sessions as they attend the National Peace Officers Memorial Service on the West Lawn of the U.S. Capitol in Washington, U.S., May 15, 2017.
Reuters/Kevin Lamarque

Trump ordered top White House attorney Donald F. McGahn II as well as several other members of his staff to convince Sessions not to recuse himself.

March 22, 2017: Trump requested that Director of National Intelligence Dan Coats and CIA director Mike Pompeo say publicly there was no evidence of collusion. Trump also wanted Coats's officials to get Comey to stop investigating Flynn

U.S. Director of National Intelligence Dan Coats.
Thomson Reuters

In the days afterward, Trump continued to press Coats, Admiral Mike Rogers, and several congressmen to declare that there was no evidence of collusion between him and Russia.

May 9, 2017: Trump fired Comey.

Former FBI Director James Comey
Drew Angerer/Getty Images

Though Trump initially maintained that he had done so because of Comey's handling of the investigation into 2016 Democratic candidate Hillary Clinton's controversial email server, he later stated that the Russia investigation was on his mind when he terminated the FBI director.

Between May and July 2017: Trump urged Sessions to pressure FBI director Christopher Wray to fire McCabe. Wray, like McGahn, threatened to resign.

On July 26, Trump tweeted several times about Sessions and McCabe, asking why his attorney general didn't replace him. At one point, the president even mentioned McCabe's wife's alleged financial ties to Clinton.

December 2, 2017: Trump tweeted that he fired Flynn because he lied to the FBI, indicating he knew he had lied when he fired Comey.

Pool/Getty Images

"I had to fire General Flynn because he lied to the Vice President and the FBI," Trump tweeted. "He has pled guilty to those lies. It is a shame because his actions during the transition were lawful. There was nothing to hide!"

His tweet seems to indicate that Trump knew about Flynn's misdeeds when he was pressuring Comey to lay off of the former national security adviser.